Durability Performance of a Warm Asphalt Product During Hot Storage

Abstract:

Comparison with base asphalt,an evaluation was made of the performance of warm asphalt modified by the surfactant based warmmix additives in asphalt properties,mixture performance and asphalt durability after hot storage.The technical indicators (including viscosity) of this warm asphalt were on the same level with base asphalt.But the warm asphalt could improve mixture workability,reduce compaction temperature.And the performance of its warm mix asphalt (WMA) was not less than the hot mix asphalt (HMA) technology requirements.At the production site,the warm asphalt after a longterm storage at high temperature could still reduce compaction temperature,so it had good thermal storage durability.According to such evaluation results,the WMA technology using the warm asphalt directly is feasible.